Home / 11,678.40-17,490.06-8,901.72

Finding the Fourth Proportional to 11,678.40, 17,490.06 and 8,901.72

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Solution

The fourth proportional to 11,678.40, 17,490.06 and 8,901.72 is: 13,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.40 : 17,490.06 = 8,901.72 : x
  2. Step 2: Convert to fraction form
    11,678.40/17,490.06 = 8,901.72/x
  3. Step 3: Cross multiply
    11,678.40x = 17,490.06 × 8,901.72
  4. Step 4: Simplify right side
    11,678.40x = 155,691,616.90
  5. Step 5: Solve for x
    x = 155,691,616.90/11,678.40
  6. Step 6: Final answer
    x = 13,331.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.